alt Hacker NewsThe cable length limitations are also a pain in the ass for not-uncommon A/V system configurations. 6' recommended max, and the best you might get working stably if the device and cable gods smile on you is 15'. 6' is the lower edge of acceptable for just about any A/V system setup (in practice it means your devices need to be within about a meter of the screen's port[s], which is pretty close) and even 15' is still too short to be useful for, say, a projector, or a "the A/V receiver or HDMI switch is over in that cabinet, the TV is on this wall across the room" situation.
HDMI goes 25'+, no problem.
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> HDMI goes 25'+, no problem.
Yep. That's likely because that's an active cable. Active DisplayPort cables exist, too. Here is one vendor selling active UHBR10 cables [0]. If you don't NEED UHBR, then you'll find your selection to be much, much larger. I've been using some Monoprice-branded 50 and 100 ft active fiber-optic HBR3 DisplayPort cables for years with no problem.
[0] <https://www.bhphotovideo.com/c/products/displayport-cables/c...>
For 4k at 60Hz, you'd need HDMI 2.0 or DP 1.2. At those speeds, both kinds of cable should be able to reach 25 feet, and I can find reputable brands selling both kinds at the length.